Superhero pre-written campaigns?

[EccentricOwl]

I'm looking for adventures and specifically campaigns written for a superhero theme - the system isn't important, but i'm sure there's something out there for Champions or M&M. Got anything?

[Libertad]

There's Emerald City Knights for 3rd Edition Mutants & Masterminds. It's only in PDF form only.

There's a free Chapter 0 version,

And a 6 Chapter Series sold on Drive-thru RPG. (http://rpg.drivethrustuff.com/product/89883/Emerald-City-Knights-Chapter-1%3A-Life-in-the-Aftermath?term=emerald+city+kni)

There's also the Time of Crisis for M&M 2nd Edition. (http://rpg.drivethrustuff.com/product/57895/Time-of-Crisis%2C-Second-Edition)

[vartan]

M&M 2e also boasts the campaign setting book of Lockdown.

[Libertad]

I'd like to also say that the Freedom City sourcebook for Mutants & Masterminds 2nd Edition is one of the best city/setting books I ever read. I love its huge assortment of super-villains and NPCs, and its list of interesting and varied locations gives it the feel of a complete and living city.

[Man on Fire]

Savage Worlds' Necessary Evil is a campaing in a world where aliens defeated superheroes and only suprevilians can save the world.

[Jay R]

Frankly, I tend to use actual comic books for my comic book modules. Any early Justice League story works well.